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analyzers/patch_generator.py

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+import difflib
+
+def generate_patch(original, fixed):
+    """
+    original, fixed = strings
+    """
+    diff = difflib.unified_diff(
+        original.splitlines(),
+        fixed.splitlines(),
+        fromfile="before.py",
+        tofile="after.py",
+        lineterm=""
+    )
+    return "\n".join(diff)

analyzers/rule_matcher.py

@@ -0,0 +1,46 @@
+import ast
+import os
+
+def match_rule(rule, code_root="artifacts/code"):
+    """
+    Returns list of violations or confirmations for a single rule ID
+    """
+    findings = []
+
+    forbidden = rule.get("forbidden", [])
+    must = rule.get("must", [])
+
+    for dirpath, _, files in os.walk(code_root):
+        for f in files:
+            if not f.endswith(".py"):
+                continue
+
+            path = os.path.join(dirpath, f)
+            try:
+                tree = ast.parse(open(path, "r", encoding="utf-8").read())
+            except Exception as e:
+                continue
+
+            source = ast.unparse(tree)
+
+            # Forbidden checks
+            for bad in forbidden:
+                if bad in source:
+                    findings.append({
+                        "rule": rule["id"],
+                        "status": "VIOLATED",
+                        "file": path,
+                        "evidence": bad
+                    })
+
+            # Must checks (existence-based)
+            for need in must:
+                if need not in source:
+                    findings.append({
+                        "rule": rule["id"],
+                        "status": "MISSING",
+                        "file": path,
+                        "evidence": need
+                    })
+
+    return findings